document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=987541>Question 987541</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane makes the 2,400 miles trip from Washington, DC to San Francisco in 7.5  hours and makes the return trip in 6 hours. Assuming that the plane travels at a constant airspeed and that the wind blows at a constant rate from west to east, find the plane's airspeed and the wind rate.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #608289 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=608289\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r, plane's speed when no wind<BR>\n" );
document.write( "w, speed of wind<BR>\n" );
document.write( "t, time going DC to San F.<BR>\n" );
document.write( "x, time back, San F. to DC<BR>\n" );
document.write( "d, one-way distance<BR>\n" );
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document.write( "FIND r and w;<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28t=7.5%2Cx=6%2Cd=2400%29 ALIGN=MIDDLE  ALT=\"system%28t=7.5%2Cx=6%2Cd=2400%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Uniform Rates Rule for Travel:  RT=D relates rate, time, and distance.<BR>\n" );
document.write( "From DC to San Francisco, travel is AGAINST the wind.<BR>\n" );
document.write( "Returning from San Francisco TO DC, travel is WITH the wind.\r<BR>\n" );
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document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "                      speed    time     distance\r\n" );
document.write( "Wash DC to S.F.       r-w       t        d\r\n" );
document.write( "S.F. back to DC       r+w       x        d\r\n" );
document.write( "</PRE>\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28%28r-w%29t=d%2C%28r%2Bw%29x=d%29 ALIGN=MIDDLE  ALT=\"system%28%28r-w%29t=d%2C%28r%2Bw%29x=d%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for r and w. </SPAN>\n" );
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